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So finally the error is gone.
I added this environment variable to my Openshift proyect:
LD_PRELOAD = '/opt/app/node_modules/sharp/vendor/lib/libz.so'
This is the url to sharp inside my node_modules.
When I opened the terminal I get and error saying that it can't be preloaded but after installing all dependencies the error is gone, and I could upload images!!!
Thank you very much @PitaJ !!!!

I want to browse two tags topics in one page, which url should i put ?
For example tags are
anatomy
surgery
Now we know we can separately browse two with following urs
/tags/anatomy
and
/tags/surgery
But i want to filter the topics with both tags
i tried something like
/tags/anatomy+surgery
*/tags/anatomy&surgery
but none of them work.
is there anyway i can filter topics with two or more tags ?

I just ran into this after changing my theme and clicking rebuild and restart... any idea how I get out of this state?
Update: After running npm install and ./nodebb build the error changed to:
Error: ENOENT: no such file or directory, open '/home/snarlynarwhal/nodebb/build/public/templates/footer.tpl'
at Error (native)
Update/Solution: Running npm install nodebb-theme-<theme-you-want> then ./nodebb build then sudo systemctl restart nodebb fixed the issue.